Tunnel blasting construction blast hole blocking device

A blast hole plugging and tunneling technology, which is applied in the field of blasting engineering auxiliary devices, can solve the problems of inconvenient operation and poor guarantee of filling quality, and achieve the effect of convenient operation and high guarantee

Inactive Publication Date: 2020-07-28
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, local materials are often used in projects, and mud chips and other materials are generally used as blasting mud to fill blastholes, which is inconvenient to operate and poor in quality assurance of filling.

Method used

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  • Tunnel blasting construction blast hole blocking device
  • Tunnel blasting construction blast hole blocking device

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Embodiment Construction

[0014] In order to facilitate the understanding and implementation of the present invention, the preferred embodiments of the present invention are selected for further description in conjunction with the accompanying drawings.

[0015] Such as figure 1 and figure 2 As shown, the tunnel blasting construction blast hole plugging device in the present invention includes a packing structure 1 and a movable rod 2, and a plurality of movable rods 2 are arranged at intervals along the circumference of the packing structure 1, and each movable rod 2 passes through a pivot 7 Hinged to the same end of the filling structure 1, and the torsion spring 3 is sleeved on the pivot 7; when the torsion spring 3 is in the natural state, the angle formed by the axis of the movable rod 2 and the axis of the filling structure 1 is less than 90° °; when the angle formed by the axis of the movable rod 2 and the axis of the packing structure 1 is 90°, the return elastic force of the torsion spring 3...

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Abstract

The invention relates to a tunnel blasting construction blast hole blocking device, and belongs to the technical field of blasting engineering auxiliary devices. The tunnel blasting construction blasthole blocking device comprises a filling structural part and movable rods, wherein the movable rods are disposed at intervals along the circumferential direction of the filling structural part, eachmovable rod is hinged to the same end of the filing structural part through a pivot shaft, and a torsion spring sleeves each pivot shaft; when the torsion springs are in the natural state, the included angle formed by the axis of the movable rods and the axis of the filling structural part is less than 90 degrees; when the included angle formed by the axis of the movable rods and the axis of the filling structural part is equal to 90 degrees, the return spring force of the torsion springs points to the other end of the filling structural part; and the filling structural part is provided with apassage for allowing a detonating fuse to pass through. The tunnel blasting construction blast hole blocking device is convenient to operate and high in filling quality assurance.

Description

technical field [0001] The invention relates to a blasthole plugging device for tunnel blasting construction, and belongs to the technical field of blasting engineering auxiliary devices. Background technique [0002] Drilling and blasting is a common technology for tunnel excavation, and it is widely used in water conservancy and hydropower, mining, transportation and other fields. During the blasting construction process, filling the blast hole can increase the pressure of the detonation gas on the hole wall and prolong the time of the pressure action, thereby greatly improving the degree of rock expansion and throwing distance, thereby improving the blasting effect. In current projects, local materials are often used, and mud chips and other materials are generally used as blasting mud to fill the blast holes, which is inconvenient to operate and poor in quality assurance. Contents of the invention [0003] The technical problem to be solved by the present invention is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/18
CPCF42D1/18
Inventor 钟权何坤夏欣何文学袁木
Owner POWERCHINA CHENGDU ENG
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